General Information 1-75
4025-XXX
Interlock Interlock switch or circuit. Used as a safety measure to
remove voltage from circuits whenever the printer covers are
open or printer assemblies are not in position
IOT Image Output Terminal. Acronym that is sometimes used in
schematic diagrams to describe the base print engine
J-
J Jack. A female electrical connector
L-
Laser Refers to either the Laser Diode Assembly or to the laser
beam
Laser beam path The path the laser beam takes, through lenses and mirrors,
from the Laser Diode to the surface of the drum
Laser Diode Semiconductor device that generates the laser beam used in
the Printhead
Latent image The invisible, electrical image remaining on the surface of the
drum after exposure
LCD Liquid Crystal Display
LD Laser Diode
LED Light Emitting Diode
L/H Left Hand
Low (signal) A signal voltage that is significantly lower than the base
voltage
LS Low Speed
LVPS Low Voltage Power Supply
M-
MCU Machine Control Unit. The board that controls the operation
of the printer, synonym for Engine Board and MCU PWB
MBX Mailbox
MOT Motor
N-
NC No Connection
NVRAM Non-Volatile Random Access Memory
O-
OHP Transparency print media
OP Open
Output test Diagnostic routine used to switch on motors, solenoids, and
clutches
P-
P Plug. A male electrical connector
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